抄録
Asahi-kasei Chemicals developed new type hollow fiber module for Membrane Bio-reactor. It has many features
for membrane, module structure, and aeration system. Membrane material is PVDF, and its advantages are physical
strength and chemical durability. Module structure is cylindrical shape which has many advantages for increasing
hollow fiber accumulation, reduction of aeration volume for module, and handling ability. However it had been
thought that cylindrical structure had a defect that activated sludge tends to accumulate among hollow fibers and
block membrane surface. We could solve this defect by hollow fiber alignment at upper part of module. By this
improvement, aeration volume for module and foot print of module decreases drastically.
